add blueprint name to request.endpoint

sanic/app.py

@@ -247,7 +247,12 @@ class Sanic:
         def response(handler):
             async def websocket_handler(request, *args, **kwargs):
                 request.app = self
-                request.endpoint = handler.__name__
+                if not getattr(handler, '__blueprintname__', False):
+                    request.endpoint = handler.__name__
+                else:
+                    request.endpoint = getattr(handler,
+                                               '__blueprintname__',
+                                               '') + handler.__name__
                 try:
                     protocol = request.transport.get_protocol()
                 except AttributeError:
@@ -541,7 +546,12 @@ class Sanic:
 
                 # Fetch handler from router
                 handler, args, kwargs, uri = self.router.get(request)
-                request.endpoint = handler.__name__
+                if not getattr(handler, '__blueprintname__', False):
+                    request.endpoint = handler.__name__
+                else:
+                    request.endpoint = getattr(handler,
+                                               '__blueprintname__',
+                                               '') + handler.__name__
                 request.uri_template = uri
                 if handler is None:
                     raise ServerError(